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冲床中套是转键机械离合器的重要零件,按传统工艺加工虽可达到设计要求,但效率很低,主要是三个半圆孔的粗插和精车两工序较复杂。为解决这一问题,改进工艺如下。实心锻坯→粗、半精车外圆及端面→铣键槽→平磨端面至90.2~(+0.2)→用钻模钻、铰3—φ35.5~(+0.29),φ10孔、倒两面2×45°、1×45°角至尺寸→车(钻φ32孔、扩、镗孔至φ31.5)→钳修6处R_(?)→淬火RC45～50→平磨→内磨→外磨。
Punch sleeve is an important part of the key mechanical clutch, according to the traditional process although it can meet the design requirements, but the efficiency is very low, mainly three semicircular hole coarse interpolation and fine car two processes more complicated. To solve this problem, improve the process is as follows. Solid forging → rough, semi-fine car outside and end → milling keyway → flat grinding end to 90.2 ~ (+0.2) → drill with a drill, hinge 3-φ35.5 ~ (+0.29), φ10 hole, 2 × 45 °, 1 × 45 ° angle to the size → car (drilling φ32 hole, expanding, boring to φ31.5) → clamp repair 6 R _ (?) → quenching RC45 ~ 50 → flat grinding → internal grinding → outside mill.